{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{3}{c}}
\hline\hline
                    &\multicolumn{1}{c}{Corp. Aaa\( ^\dag\)}&\multicolumn{1}{c}{Corp. Baa\( ^\dag\)}&\multicolumn{1}{c}{Corp. C\( ^\dag\)}\\
\hline
D_shock             &        0.94***&        0.96***&        0.23   \\
                    &      (0.10)   &      (0.10)   &      (0.39)   \\
\hline
Obs.                &        1040   &        1040   &         973   \\
$ R^{2}$            &        0.14   &        0.15   &        0.00   \\
Sample              &   1995-2017   &   1995-2017   &   1997-2017   \\
\hline\hline
\end{tabular}
}
